Home / 12,583.57-18,807.56-10,989.79

Finding the Fourth Proportional to 12,583.57, 18,807.56 and 10,989.79

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Solution

The fourth proportional to 12,583.57, 18,807.56 and 10,989.79 is: 16,425.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,583.57 : 18,807.56 = 10,989.79 : x
  2. Step 2: Convert to fraction form
    12,583.57/18,807.56 = 10,989.79/x
  3. Step 3: Cross multiply
    12,583.57x = 18,807.56 × 10,989.79
  4. Step 4: Simplify right side
    12,583.57x = 206,691,134.81
  5. Step 5: Solve for x
    x = 206,691,134.81/12,583.57
  6. Step 6: Final answer
    x = 16,425.48

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.